Split a file into smaller pieces

split.py

#!/bin/python3
import sys

# This program splits a file into smaller files of given size
if len(sys.argv) == 3:
    fname = sys.argv[1]
    osize = int(sys.argv[2])
    try:
        with open(fname, 'rb') as f:
            f.seek(0, 2)
            fsize = f.tell()
            print(fsize)
            f.seek(0)
            count = 0
            while (count * osize < fsize):
                with open(fname + '.' + str(count), 'wb') as g:
                    g.write(f.read(min(osize, fsize - count * osize)))
                count += 1
    except Exception as e:
        print(e)
else:
    print("usage: {} <filename> <output_size>".format(sys.argv[0]))